Date: Thu, 8 Jun 2023 20:47:32 +0800
Subject: [PATCH 33/59] 8211326: add OS user related information to hs_err file

Bug url: https://bugs.openjdk.org/browse/JDK-8211326
---
 hotspot/src/os/posix/vm/os_posix.cpp       | 33 ++++++++++++++++++++++
 hotspot/src/os/posix/vm/os_posix.hpp       |  3 ++
 hotspot/src/share/vm/utilities/vmError.cpp |  8 ++++++
 3 files changed, 44 insertions(+)

diff --git a/hotspot/src/os/posix/vm/os_posix.cpp b/hotspot/src/os/posix/vm/os_posix.cpp
index 678a1059f..189c8b411 100644
--- a/hotspot/src/os/posix/vm/os_posix.cpp
+++ b/hotspot/src/os/posix/vm/os_posix.cpp
@@ -33,6 +33,8 @@
 #include <unistd.h>
 #include <sys/resource.h>
 #include <sys/utsname.h>
+#include <grp.h>
+#include <pwd.h>
 #include <pthread.h>
 #include <signal.h>
 
@@ -233,6 +235,37 @@ void os::Posix::print_uname_info(outputStream* st) {
   st->cr();
 }
 
+void os::Posix::print_umask(outputStream* st, mode_t umsk) {
+  st->print((umsk & S_IRUSR) ? "r" : "-");
+  st->print((umsk & S_IWUSR) ? "w" : "-");
+  st->print((umsk & S_IXUSR) ? "x" : "-");
+  st->print((umsk & S_IRGRP) ? "r" : "-");
+  st->print((umsk & S_IWGRP) ? "w" : "-");
+  st->print((umsk & S_IXGRP) ? "x" : "-");
+  st->print((umsk & S_IROTH) ? "r" : "-");
+  st->print((umsk & S_IWOTH) ? "w" : "-");
+  st->print((umsk & S_IXOTH) ? "x" : "-");
+}
+
+void os::Posix::print_user_info(outputStream* st) {
+  unsigned id = (unsigned) ::getuid();
+  st->print("uid  : %u ", id);
+  id = (unsigned) ::geteuid();
+  st->print("euid : %u ", id);
+  id = (unsigned) ::getgid();
+  st->print("gid  : %u ", id);
+  id = (unsigned) ::getegid();
+  st->print_cr("egid : %u", id);
+  st->cr();
+
+  mode_t umsk = ::umask(0);
+  (void)::umask(umsk);
+  st->print("umask: %04o (", (unsigned) umsk);
+  print_umask(st, umsk);
+  st->print_cr(")");
+  st->cr();
+}
+
 bool os::has_allocatable_memory_limit(julong* limit) {
   struct rlimit rlim;
   int getrlimit_res = getrlimit(RLIMIT_AS, &rlim);
diff --git a/hotspot/src/os/posix/vm/os_posix.hpp b/hotspot/src/os/posix/vm/os_posix.hpp
index d3e55d020..0d29bfbaf 100644
--- a/hotspot/src/os/posix/vm/os_posix.hpp
+++ b/hotspot/src/os/posix/vm/os_posix.hpp
@@ -69,6 +69,9 @@ public:
   // effective gid, or if given uid is root.
   static bool matches_effective_uid_and_gid_or_root(uid_t uid, gid_t gid);
 
+  static void print_umask(outputStream* st, mode_t umsk);
+
+  static void print_user_info(outputStream* st);
 };
 
 /*
diff --git a/hotspot/src/share/vm/utilities/vmError.cpp b/hotspot/src/share/vm/utilities/vmError.cpp
index 351c21200..44562fe36 100644
--- a/hotspot/src/share/vm/utilities/vmError.cpp
+++ b/hotspot/src/share/vm/utilities/vmError.cpp
@@ -713,6 +713,14 @@ void VMError::report(outputStream* st) {
        st->cr();
      }
 
+#ifndef _WIN32
+  STEP(165, "(printing user info)" )
+
+     if (ExtensiveErrorReports && _verbose) {
+       os::Posix::print_user_info(st);
+     }
+#endif
+
   STEP(170, "(printing all threads)" )
 
      // all threads
-- 
2.22.0